Results 31 to 40 of about 5,165,159 (345)

Constant-pressure sound waves in non-Hermitian disordered media [PDF]

open access: yesConference on Lasers and Electro-Optics, 2018
When waves impinge on a disordered material they are back-scattered and form a highly complex interference pattern. Suppressing any such distortions of a wave’s free propagation is a challenging task with many applications in a number of different ...
E. Rivet   +5 more
semanticscholar   +1 more source

Inderwater noise characteristics of TINRO-Center’s reseach vessels

open access: yesИзвестия ТИНРО, 2014
Underwater noise radiated by two medium-tonnage research vessels of Pacific Fish. Res. Center (TINRO) belonged to the same project «Atlantic-833» (RV TINRO and Professor Kaganovsky) is measured by a calibrated hydrophone system.
Michail Yu. Kuznetsov   +2 more
doaj   +1 more source

Ultrasonic Dehydration of Food Products with Moisture Removal without Phase Transition

open access: yesТехника и технология пищевых производств, 2021
Introduction. Dehydration of heat-sensitive and easily oxidized food products require particular temperatures. Exposure to ultrasonic vibrations is an alternative dehydration method that presupposes moderate thermal treatment.
Andrey V. Shalunov   +4 more
doaj   +1 more source

Concise review: aerodynamic noise prediction methods and mechanisms for wind turbines

open access: yesInternational Journal of Sustainable Energy, 2023
Wind power plants are increasingly being installed across the world to combat energy deficits and climate change. One of the policy constraints for installing wind turbine plants is acoustic emissions from blades during operation. In this work, a concise
Vasishta Bhargava Nukala   +1 more
doaj   +1 more source

Quantitative calibration of sound pressure in ultrasonic standing waves using the Schlieren method.

open access: yesOptics Express, 2017
We investigated the use of the Schlieren method to calibrate the sound pressure in an ultrasonic standing-wave field. Specifically, we derived an equation to calculate the light intensity of the diffraction fringe induced by the standing-wave field.
Zheng Xu   +4 more
semanticscholar   +1 more source

Performance Analysis of Different Gun Silencers

open access: yesApplied Sciences, 2023
With the rapid development of the military industry and the increasing focus on the safety of those in these fields, there is an increasing search for solutions to existing and emerging weapons for the user and the environment.
Artūras Kilikevičius   +6 more
doaj   +1 more source

Calculation of sound pressure level of marine propeller in low frequency

open access: yes, 2018
The research performed in this paper is carried out to calculate the sound pressure level of the marine propeller by Reynolds-Averaged Navier–Stokes solver in low frequencies band.
M. Gorji, H. Ghassemi, Jalal Mohamadi
semanticscholar   +1 more source

Wind turbine sound pressure level calculations at dwellings.

open access: yesJournal of the Acoustical Society of America, 2016
This paper provides calculations of outdoor sound pressure levels (SPLs) at dwellings for 10 wind turbine models, to support Health Canada's Community Noise and Health Study. Manufacturer supplied and measured wind turbine sound power levels were used to
S. Keith   +9 more
semanticscholar   +1 more source

Differential Intracochlear Sound Pressure Measurements in Human Temporal Bones with an Off-the-Shelf Sensor

open access: yesBioMed Research International, 2016
The standard method to determine the output level of acoustic and mechanical stimulation to the inner ear is measurement of vibration response of the stapes in human cadaveric temporal bones (TBs) by laser Doppler vibrometry.
M. Grossöhmichen   +4 more
semanticscholar   +1 more source

On acoustic natural frequencies of planar wave sound field connected two acoustic tubes with different cross sectional area and length (Theoretical consideration)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Ducts are widely used in an industry field. For example, air conditioning ducts, exhaust ducts, smoke elimination ducts and silencers have been used in various ducts.
Kunihiko ISHIHARA
doaj   +1 more source

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